BTC's 82000 Call OI Build Masks a Seller-Led Taker Tape

The Nov 27 82000 call added +159.2 contracts of OI over 24h, the largest build at that expiry, a signal that on its own would read as fresh bullish accumulation. The taker tape tells the opposite story: 24h net premium at the strike is -$207.4k with buyer aggression of just 0.18 (82% of volume was sellers), and one hour bucket (00:00-01:00 UTC) alone printed -$204.4k net premium on 35 trades, flagged as a 9.8-sigma spike. No block trades hit this strike — it's screen-driven flow, writers selling calls into the move, not an OTC print.

Compare that to neighboring strikes, where OI actually fell while buyers paid up:

Strike	24h Call OI Δ	24h Net Premium	Buyer Aggression
82000	+159.2	-$207.4k	0.18
84000	-71.4	+$99.5k	0.93
85000	-51.6	+$68.3k	0.88
86000	-73.3	+$18.3k	0.58
90000	+69.3	+$5.1k	0.55

OI rose where sellers dominated and fell where buyers dominated — the inverse of a naive OI-bullish read.